PB, you look like never use software to draw anything or didn't care about some special photos are true or false on the internet, the meaning of PS just like john mentioned, and when we talking about photos and the PS means PhotoShop, because the PhotoShop is the most famous computer modifying software for Photos, it was so famous, and became the representative of computer software for Photos, but it is also too expensive, so I just use the freeware GIMP, and I downloaded the software yesterday.

PB, you look like never use software to draw anything or didn't care about some special photos are true or false on the internet, the meaning of PS just like john mentioned, and when we talking about photos and the PS means PhotoShop, because the PhotoShop is the most famous computer modifying software for Photos, it was so famous, and became the representative of computer software for Photos, but it is also too expensive, so I just use the freeware GIMP, and I downloaded the software yesterday.

Some 40 years ago, (PS did not exist and nobody did care either ), I spent a full year in an hydrographic survey along a stretch of our Paraná river, well upstream, where the navigation for barges was (is?) conducted using visual references to buoys (where they do exist) but mostly to relevant natural points on both margins. One of them, a small cliff covered with trees and bushes, was known as "la Reina Victoria" (Victoria Queen).

It took lot of imagination to see precisely her image there, just a vague human profile, but all pilots recognized the place and you would not dare to argue on that.

We're using it all the time when we talk on the radio in the Homeguard. When the link is bad, nothing beats spelling names with the phonetic alphabet.

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Yes! In emergencies, with two or more vessels navigating close to each other, it is good to be clearly understood. If you tune any marine channel you will hear it all the time. Even more with people native in different languages who risk to understand what they hear, differently. Trust me on this.

It is used worldwide and not limited to the military or maritime activity. Look here